1. Radio Astronomy Lab, UC Berkeley, Berkeley, CA, U.S.A 2. Department of Physics and Astronomy, Carleton College, Northfield, MN, U.S.A 3. Department of Astronomy, California Institute of Technology, Pasadena, CA, U.S.A
Abstract:
In this paper we present and discuss the great difference in OH absorption spectra against PSR B1849+00 and SNR G33.6+0.1 along the same line-of-sight. This finding is important as it clearly demonstrates that statistics of absorbing molecular gas depends on the size of the background source.